Multiple small systems in a building

Where a system consists of a number of small units with an effective rated output of less than 12kW, but the total number of units within the building means that the combined cooling capacity is greater than 12kW then an air conditioning inspection is required.

The example below shows an air conditioning system with a cooling capacity greater than 250kW that serves multiple separate rooms. Although the air conditioning system serves multiple separate rooms, some with cooling capacity as low as 3kW per room, the air conditioning system is a single system under single control for the whole building with a cooling capacity greater than 250kW. An air conditioning inspection on a system with a cooling capacity greater than 250kW should have been carried out by 4 January 2009. A revised air conditioning inspection report would be required every 5 years from the date of the initial inspection.